GNC1

GNC1 is the premier class in the AMA Grand National Championship for professional motorcycle flat track racing in the United States.

In GNC1, twin-cylinder motorcycles are the primary machines and will be used for Mile and Half-Mile circuits while single-cylinder motorcycles will be used for Short Track and TT events. Beginning with the 2017 season, only twin-cylinder motorcycles will be used in GNC1 competition.^[1]

GNC1 Twins

Eligible engines

As of May 20, 2016^[2]

• Aprilia
  • RSV 1000 R
  • RXV 550 / SXV 550
• BMW F800
• Buell Motorcycle Company
  • XB9
  • XB12
  • XB3
• Ducati
  • Desmodue 803
  • Desmodue Evo 1100
  • Desmoquattro 748
  • Testastretta 749, 821, 848, 939
• Harley-Davidson
  • XR-750 (race-only engine)
  • XG750
  • 883
  • XR1200
• Honda
  • NC700X
  • RS750 (race-only engine)
• Indian
  • Scout FTR750 (race-only engine)
  • Scout 60
• Kawasaki
  • Ninja 650R
• KTM
  • LC8
• Suzuki
  • SV650
  • SV1000
  • TL1000
• Triumph
  • Bonneville 865 (air-cooled)
  • Bonneville 900 (liquid-cooled)
• Yamaha
  • TDM
  • FZ-07

Engine displacement

550-1250cc with the following restrictions: racing-only engines (Harley-Davidson XR750, Honda RS750, and Indian Motorcycle Race 750) may not exceed 750cc, engines greater than 1000cc are restricted to air/oil cooled.

Minimum weight

300 pounds (136 kg) including fuel.

Tires

Dunlop DT3 19-inch flat track tires.^[3]

Fuel

Sunoco Supreme 112

GNC1 Singles

Eligible motorcycles

• Honda CRF450R
• Husqvarna FC450
• Kawasaki KX450F
• KTM 450 SX-F
• KTM 450 XC
• Suzuki RM-Z 450
• Yamaha YZ450F
• Zaeta 450DT

Tires

Dunlop DT3 19-inch flat track tires.^[4]

Fuel

Sunoco Supreme 112

References